Orbisirius child theme

I installed this plug-in and created a child theme from the current appointment pro, then i searched the file index-banner.php and is not there. So i followed these instructions https://prnt.sc/l9e6wq, but seems that there is an error in the syntax see the attacchment

I tried to edit with the child editor the appointment pro index-banner.php, overwriting the code in order to obtain the slider in any page, but even if i save the changes these does not work.
I would obtain the slider and the footer in any page, but is not possible to edit the theme, when i create a new index-banner.php the syntax code is wrong
Please help


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